1
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment, the distance of $$\mathrm{n}^{\text {th }}$$ dark band from the central bright band in terms of bandwidth '$$\beta$$' is

A
$$\mathrm{n} \beta$$
B
$$(\mathrm{n}-1) \beta$$
C
$$(\mathrm{n}-0.5) \beta$$
D
$$(\mathrm{n}+0.5) \beta$$
2
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In biprism experiment, $$6^{\text {th }}$$ bright band with wavelength '$$\lambda_1$$' coincides with $$7^{\text {th }}$$ dark band with wavelength '$$\lambda_2$$' then the ratio $$\lambda_1: \lambda_2$$ is (other setting remains the same)

A
$$7: 6$$
B
$$13: 12$$
C
$$12: 13$$
D
$$6: 7$$
3
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

In Young's experiment with a monochromatic source and two slits, one of the slits is covered with black opaque paper, the fringes will

A
be darker
B
be narrower
C
be broader
D
not be observed
4
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the interference experiment using a biprism, the distance of the slits from the screen is increased by $$25 \%$$ and the separation between the slits is halved. If '$$W$$' represents the original fringewidth, the new fringewidth is

A
2 W
B
2.5 W
C
4 W
D
1.5 W
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